diff --git a/libraries/kotlinx-metadata/jvm/ChangeLog.md b/libraries/kotlinx-metadata/jvm/ChangeLog.md
index e4bc4021d52..afb1350244c 100644
--- a/libraries/kotlinx-metadata/jvm/ChangeLog.md
+++ b/libraries/kotlinx-metadata/jvm/ChangeLog.md
@@ -2,6 +2,8 @@
 
 ## 0.1.1
 
+- [`KT-42429`](https://youtrack.jetbrains.com/issue/KT-42429) Wrong interpretation of Flag.Constructor.IS_PRIMARY
+    - Breaking change: `Flag.Constructor.IS_PRIMARY` is deprecated, use `Flag.Constructor.IS_SECONDARY` instead
 - [`KT-37421`](https://youtrack.jetbrains.com/issue/KT-37421) Add Flag.Class.IS_FUN for functional interfaces
 - Add `KmModule.optionalAnnotationClasses` for the new scheme of compilation of OptionalExpectation annotations in multiplatform projects ([KT-38652](https://youtrack.jetbrains.com/issue/KT-38652))
 
diff --git a/libraries/kotlinx-metadata/src/kotlinx/metadata/Flag.kt b/libraries/kotlinx-metadata/src/kotlinx/metadata/Flag.kt
index d24f6655b0c..a6123e8e49f 100644
--- a/libraries/kotlinx-metadata/src/kotlinx/metadata/Flag.kt
+++ b/libraries/kotlinx-metadata/src/kotlinx/metadata/Flag.kt
@@ -220,11 +220,8 @@ class Flag(private val offset: Int, private val bitWidth: Int, private val value
      */
     object Constructor {
         @JvmField
-        @Deprecated(
-            "Use IS_SECONDARY which holds inverted value instead.",
-            ReplaceWith("Flag.Constructor.IS_SECONDARY"),
-            level = DeprecationLevel.ERROR
-        )
+        @Deprecated("Use IS_SECONDARY which holds inverted value instead.", level = DeprecationLevel.ERROR)
+        @Suppress("unused")
         val IS_PRIMARY = Flag(F.IS_SECONDARY, 0)
 
         /**